It is narrated, most likely as a marfu’ hadith, from Sayyiduna Ibn Mas’ud (may Allah be pleased with him) that near the Day of Judgment, the days of «هرج» will come in which knowledge will decline and ignorance will prevail. Sayyiduna Abu Musa Ash’ari (may Allah be pleased with him) says that in the language of the people of Habasha, «هرج» means killing.